Kedward
Member
- Location
- San Jose, CA
- Occupation
- Electrical Engineer
Hello,
I've been struggling on requirements for the TC-ER, ITC-ER, and PLTC-ER from 501.10(B) with respect to EGCs.
I read this as:
1. PLTC-ER requires an EGC if a drain wire is present.
2. ITC-ER will always have an EGC and drain wire.
3. TC-ER requires an EGC if a drain wire is present.
These requirements aren't entirely making sense to me, but I'm just wondering if I'm even interpreting the language correctly. I feel like it can be interpreted that all acceptable -ER cables for hazardous locations require an EGC but the wording being different for ITC-ER vs PLTC/TC-ER is making me question that.
I've been struggling on requirements for the TC-ER, ITC-ER, and PLTC-ER from 501.10(B) with respect to EGCs.
- (3) Type PLTC cable or Type PLTC-ER cable used for Class 2 and Class 3 circuits, including installation in cable tray systems. The cable shall be terminated with listed fittings. Type PLTC-ER cable shall include an equipment grounding conductor in addition to a drain wire that might be present.
- (4) Type ITC cable or Type ITC-ER cable as permitted in 335.4 and terminated with listed fittings. Type ITC-ER cable shall include an equipment grounding conductor in addition to a drain wire.
- (5) Type MC, Type MV, Type TC, or Type TC-ER cable, including installation in cable tray systems. Type TC-ER cable shall include an equipment grounding conductor in addition to a drain wire that might be present. All cable types shall be terminated with listed fittings.
I read this as:
1. PLTC-ER requires an EGC if a drain wire is present.
2. ITC-ER will always have an EGC and drain wire.
3. TC-ER requires an EGC if a drain wire is present.
These requirements aren't entirely making sense to me, but I'm just wondering if I'm even interpreting the language correctly. I feel like it can be interpreted that all acceptable -ER cables for hazardous locations require an EGC but the wording being different for ITC-ER vs PLTC/TC-ER is making me question that.