3 questions from an apprentice

[davidbananas999]

1. Can MC be cable tied to other MC? Example: running 1 piece of mc down a metal stud, securing it with 3/8" staps, then adding additional mc along the same stud with cable ties to the first MC.

2. When calculating the ampacity for a circuit supplying multiple continuous motors, do you still only use 125% of the largest + 100% of the others? Even if the others are continuous?



3. Is a GFCI receptacle located under a sink considered to be readily accessible? The code does not define readily accessible as having to go "under something." Also, my coworker used the argument that it is not readily accessible because you have to remove the items under your sink to reach it (items the home owner placed there), but by that logic, counter tops wouldn't be readily accessible either because the owner could place a crock pot in front of it etc.
> other note: My 10 year journeyman says he failed an inspection because a GFCI was under the sink and the inspector told him "an old lady cant get down there to reset it." Well what about really "short people," who would potentially have to get a ladder to reach the counter top GFCI?



Thanks for any input, and please site code from the 2014 nec to back up any reasoning, thanks.

 

[iwire]

Can MC be cable tied to other MC? Example: running 1 piece of mc down a metal stud, securing it with 3/8" staps, then adding additional mc along the same stud with cable ties to the first MC.

Have you tried looking in article 300 wiring methods?

2. When calculating the ampacity for a circuit supplying multiple continuous motors, do you still only use 125% of the largest + 100% of the others? Even if the others are continuous?

The motor calculations do not change if the motors are too run continuously.

3. Is a GFCI receptacle located under a sink considered to be readily accessible? The code does not define readily accessible as having to go "under something." Also, my coworker used the argument that it is not readily accessible because you have to remove the items under your sink to reach it (items the home owner placed there), but by that logic, counter tops wouldn't be readily accessible either because the owner could place a crock pot in front of it etc.
> other note: My 10 year journeyman says he failed an inspection because a GFCI was under the sink and the inspector told him "an old lady cant get down there to reset it." Well what about really "short people," who would potentially have to get a ladder to reach the counter top GFCI?

In my opinion that is a call up to the AHJ / Inspector.

 

[growler]

My 10 year journeyman says he failed an inspection because a GFCI was under the sink and the inspector told him "an old lady cant get down there to reset it."

As Iwire says it's up to the inspector.

I really think that his logic is way off on that one (the inspector). If we start thinking of all the things that an old lady can't do then we must also think of the handicaped. If that old lady is in a wheel chair/walker can she reach over the counter to reset a counter top receptacle? Can she even get to the basement to reset a GFCI breaker? Where does it stop?

Are we required to wire every house for those of limited mobility?