service disconnect
- Thread starter jlbtexas
- Start date
- Status
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
What code cycle?
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Under the 2019 NEC, no.
All services require a main disconnect or disconnects. The 2020 NEC requires a single main disconnect unless you meet requirements in 230.71(B), see if (B) applies to your installation.
All services require a main disconnect or disconnects. The 2020 NEC requires a single main disconnect unless you meet requirements in 230.71(B), see if (B) applies to your installation.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
2019???
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I'm so happy to still be in a red state.
PaulMmn
Senior Member
- Location
- Union, KY, USA
- Occupation
- EIT - Engineer in Training, Lafayette College
At least the gray majority is only 1 release behind...
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
I have to change my sig line, I was unaware that we finally changed to the 2017 code. I'll have to buy a copy now too...
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
2017 good, much less expensive for this install.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
If it says what I think it says it is also 2020 compliant.
CT can----- three service disconnects in separate panels----- feeders/branch circuits to RV spaces.
What 2020 won't allow that was allowed before is a main lug panel with three breakers installed as the service disconnecting means.
Roger i saw One of your post and I’m having difficulty on a question for the journeyman practice exam on arc welders .
Multiple nonmotor generator arc welders are being served by a branch panel.
There are two 120-amperes welders with a 70% duty cycle, one 90-amperes welder
with a 80% duty cycle, and one 250-amperes welder with a 50% duty cycle. What is
the minimum disconnect for this branch panel?
It says the answer is 450amperes but I’ve done my math and I keep getting 459 what am I doing wrong?
Multiple nonmotor generator arc welders are being served by a branch panel.
There are two 120-amperes welders with a 70% duty cycle, one 90-amperes welder
with a 80% duty cycle, and one 250-amperes welder with a 50% duty cycle. What is
the minimum disconnect for this branch panel?
It says the answer is 450amperes but I’ve done my math and I keep getting 459 what am I doing wrong?
- Status