ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
240V only in a home and NEC?
by emolatur - 05/18/24 06:12 PM
Electricians revenge
by gfretwell - 05/09/24 08:24 PM
Safety at heights?
by gfretwell - 04/23/24 03:03 PM
Old low volt E10 sockets - supplier or alternative
by gfretwell - 04/21/24 11:20 AM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 32 guests, and 10 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#48075 02/03/05 09:47 AM
Joined: Dec 2002
Posts: 228
J
JCooper Offline OP
Member
Hello all, I have an existing Infared electric heater installed, nameplate amps is 25, OCP 30 amps, fed with #8 THWN in 3/4" flex. I am adding another heater right next to this one and I just wanted to make sure that I can share the #8 EGC I pulled the first time, I will just be adding the two ungrounded conductors to feed the second unit in the same raceway. I looked in 250.122 and for 30 ocp the min EGC is #10, and for 60 amp, which would be the total amps drawn by both units the EGC is still #10 so my #8 should be fine, right? Thanks

Jim

#48076 02/03/05 09:54 AM
Joined: Aug 2003
Posts: 1,374
R
Moderator
The EGC should be sized dependant upon the breaker that it needs to trip. For the 30 amp, #10 is typically fine, however, you increased the size of the ungrounded conductors (for voltage drop?), and therefore the EGC must be increased in proportion, requiring a #8 EGC. It sounds to me like your EGC size will be fine.


Ryan Jackson,
Salt Lake City
#48077 02/03/05 10:25 PM
Joined: Dec 2002
Posts: 228
J
JCooper Offline OP
Member
Sorry, I forgot to include that, the run is about 100' so I ran the #8 for VD. I thought the egc was alright, I just wanted to make sure I didn't miss something. Thanks

Jim


Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5