Meter and Panel
- Thread starter Selly
- Start date
- Status
"SE" cable (Art 338) is allowed for many installations.
Your question seemingly refers to the length of SE that can be run from a meter directly to a interior panel.
There is no magic number on that length. The length of "unprotected" cable allowed on the interior portion of a structure is limited by Art 230.70 but the exact length allowed is determined by local inspection.
3 to 6 ft are common limitations.
Your question seemingly refers to the length of SE that can be run from a meter directly to a interior panel.
There is no magic number on that length. The length of "unprotected" cable allowed on the interior portion of a structure is limited by Art 230.70 but the exact length allowed is determined by local inspection.
3 to 6 ft are common limitations.
hbiss
EC, New York NEC: 2017
- Location
- Little Falls, New York NEC: 2017
- Occupation
- EC
Keep in mind that it's really the length of what ever is run, not just because it's SE cable. Most jurisdictions will limit the distance anything is run "unprotected" in the interior of a structure, even if it's in rigid galvanized conduit.
You seem to imply that you believe there is some requirement for using SE cable. Normally that is just a matter of choice, SE cable is inexpensive and easy to work with. The alternative is conduit, either EMT, RGS or PVC with individual conductors pulled in- which you can imagine is lot's more work. Some jurisdictions do not allow SE cable due to concerns over physical damage.
-Hal
You seem to imply that you believe there is some requirement for using SE cable. Normally that is just a matter of choice, SE cable is inexpensive and easy to work with. The alternative is conduit, either EMT, RGS or PVC with individual conductors pulled in- which you can imagine is lot's more work. Some jurisdictions do not allow SE cable due to concerns over physical damage.
-Hal
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
The trade term is unfused servce conductors. Unfused as no ocpd on secondary of poco transformer. The unfused conductors are protected 3 ways;
1. Limit on length inside building
2. Type of wiring method
3. Special rules for grounding
Here is a concept to think about
Unfused wires are protected against overload (load calculation) but not short circuits or ground faults.
In WA, we can have 15ft of raceway, only certain types, in the building for unfused conductors. No SE cable or emt.
Can run SE cable outside but not in.
I have never in 40 years seen SE cable used for a service.
For the OP, its important you understand the why on these rules, the how is in the NEC.
1. Limit on length inside building
2. Type of wiring method
3. Special rules for grounding
Here is a concept to think about
Unfused wires are protected against overload (load calculation) but not short circuits or ground faults.
In WA, we can have 15ft of raceway, only certain types, in the building for unfused conductors. No SE cable or emt.
Can run SE cable outside but not in.
I have never in 40 years seen SE cable used for a service.
For the OP, its important you understand the why on these rules, the how is in the NEC.
- Status