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Search took 6.93 seconds. Search: Posts Made By: tom baker
Forum: NEC Yesterday, 08:25 PM
Replies: 17
Views: 199
Posted By tom baker
If the GFCI trips from a faulty block heater,...

If the GFCI trips from a faulty block heater, what is the current to ground? 15-30-100 mA? The GFCI is doing its job.
Forum: NEC 11-19-2009, 03:52 PM
Replies: 22
Views: 562
Posted By tom baker
Not quite true, what about the FPN to 300.3(C)...

Not quite true, what about the FPN to 300.3(C) and its 725.136(A)?
Forum: NEC 11-19-2009, 03:47 PM
Replies: 7
Views: 75
Posted By tom baker
I wouldn't use a mwbc due to the hazard of open...

I wouldn't use a mwbc due to the hazard of open neutrals.
Forum: NEC 11-18-2009, 06:32 PM
Replies: 22
Views: 562
Posted By tom baker
The solution may be as simple as using 600 V...

The solution may be as simple as using 600 V sheilded tray cable.
But first look at the VFD and find out what type of circuit the wiring to the motor stat is. What you are looking for is "Class 1"...
Forum: NEC 11-17-2009, 06:51 PM
Replies: 34
Views: 654
Posted By tom baker
What code section allows that?

What code section allows that?
Forum: Lighting 11-17-2009, 04:58 PM
Replies: 4
Views: 138
Posted By tom baker
I learned this from Mike Holt: You get what you...

I learned this from Mike Holt:
You get what you pay for
More is better
I do mostly electrical for instrumentation and control.I don't install an electrical service without SPDs. Its paid off in a...
Forum: NEC 11-16-2009, 04:33 PM
Replies: 14
Views: 271
Posted By tom baker
There are service entrance rated TS's that have...

There are service entrance rated TS's that have no overcurrent protection...Sq D makes them, we have one in a maint facility.
Forum: Exam Preparation 11-16-2009, 03:29 PM
Replies: 7
Views: 214
Posted By tom baker
In Washington you can take any trademarked book...

In Washington you can take any trademarked book into the test.
The test is open book, but the idea is to test you on subjects you have not dealt with before, to see if you can find the information. ...
Forum: NEC 11-16-2009, 03:23 PM
Replies: 4
Views: 145
Posted By tom baker
Start with doing a load calc for each unit.

Start with doing a load calc for each unit.
Forum: Grounding versus Bonding 11-13-2009, 12:23 PM
Replies: 4
Views: 213
Posted By tom baker
The rules for your application are in Art 690,...

The rules for your application are in Art 690, require GFCI for cord and plug connected pumps.
I have four large fountains I maintain, here is a link to one of the foutains...
Forum: Grounding versus Bonding 11-13-2009, 12:11 PM
Replies: 18
Views: 462
Posted By tom baker
What is the NEC requirement for bonding isolated...

What is the NEC requirement for bonding isolated sections of metal water piping systems?
Why is there a danger with an electric water heater?
Forum: Lighting 11-12-2009, 02:05 PM
Replies: 13
Views: 403
Posted By tom baker
I had a Wellworth fixture, 1.6 gpm flush, but I...

I had a Wellworth fixture, 1.6 gpm flush, but I replaced it with a dual flush toilet, its worked really well. I got it at Costco of all places to buy a fixture.

For a luminaire, I just looked at a...
Forum: Continuing Education (CEU) 11-12-2009, 02:02 PM
Replies: 7
Views: 183
Posted By tom baker
Look at Mike Holts books on electrical theorey...

Look at Mike Holts books on electrical theorey...
Forum: Low Voltage and Limited Energy 11-12-2009, 11:59 AM
Replies: 21
Views: 768
Posted By tom baker
Article 820 , although the title is misleading....

Article 820 , although the title is misleading. Where the coax enters the building, install an impulse supressor, transistion to the interior listed coax. With the inpulse supressor create a single...
Forum: NEC 11-12-2009, 11:14 AM
Replies: 10
Views: 416
Posted By tom baker
In Washington, your situation would be considered...

In Washington, your situation would be considered existing and no CEE is required.
Forum: NEC 11-12-2009, 11:12 AM
Replies: 3
Views: 82
Posted By tom baker
If this is portable cord, which it should be,...

If this is portable cord, which it should be, then you would size from Article 400 table 400.5. Type W is normally used for this application.
Forum: NEC 11-12-2009, 11:03 AM
Replies: 19
Views: 782
Posted By tom baker
Unused current? Well, they are selling you...

Unused current?
Well, they are selling you snake oil.

First off, its a violation of the mfg panel listing unless the device is listed by that mgf as an allowed accessory. Thats 110.3(B).
...
Forum: Grounding versus Bonding 11-10-2009, 03:34 PM
Replies: 6
Views: 156
Posted By tom baker
If the neutral is not transfered "solidly...

If the neutral is not transfered "solidly connected" then no ground rods are required.
Electricans and inspectors don't understand this, so they require ground rods. Now the mfgs (Generac for one)...
Forum: Grounding versus Bonding 11-10-2009, 03:30 PM
Replies: 9
Views: 284
Posted By tom baker
There are some new products out: MC AP has an...

There are some new products out:
MC AP has an al bonding strip, same as AC. It saves 30% on installation time.
The new AC is similar to MC in that is uses a mylar covering.
Forum: NEC 11-09-2009, 03:20 PM
Replies: 44
Views: 1,570
Posted By tom baker
The person who made the video asked for comments....

The person who made the video asked for comments. Has anyone sent him the violations?
We should add, never troubleshoot or repair while using video camera.
Forum: NEC 11-05-2009, 03:47 PM
Replies: 41
Views: 831
Posted By tom baker
There is an exception for dwelling units from...

There is an exception for dwelling units from having a grounding electrode were fed by a single or multiwire BC.
But you still have to comply with the disconnecting means requirement in 225
225.31...
Forum: NEC 11-04-2009, 03:19 PM
Replies: 8
Views: 224
Posted By tom baker
Often what we call an emergency generator is not...

Often what we call an emergency generator is not an article 700 application. Look at the scope of Article 700, 701 and 702
Forum: Lighting 11-04-2009, 03:17 PM
Replies: 24
Views: 887
Posted By tom baker
What section prohibts this?

What section prohibts this?
Forum: Safety 11-03-2009, 08:18 PM
Replies: 7
Views: 474
Posted By tom baker
Some would like to think they are exempt from the...

Some would like to think they are exempt from the NEC. They may have a street lighting department, which would be under the NESC, but traffic signals clearly are under the scope of the NEC.
A lot...
Forum: NEC 11-03-2009, 06:59 PM
Replies: 11
Views: 348
Posted By tom baker
There is a type of NM cable NM-C intended for...

There is a type of NM cable NM-C intended for this application, but its not common.
I would suggest PVC sch 80 with PVC FS boxes, run guard strips on each side to protect from chewing and damage.
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