tap rule question [240.21(B)(1)]

[Krusscher]

Can anyone explain what exactly this means?
The tap conductors do not extend beyond the switchboard, switchgear, panelboard, disconnecting means, or control devices they supply.

I am tapping a 60A #6 in a disconnect where it will feed that disconnect with a 35A fused circuit and a 20A fused disconnect 8 feet away connected by conduit. Can I use the tap rule to feed the 20A disconnect with #12? I'm a bit confused by the intention of this rule.

 

[xformer]

Can anyone explain what exactly this means?
The tap conductors do not extend beyond the switchboard, switchgear, panelboard, disconnecting means, or control devices they supply.

I am tapping a 60A #6 in a disconnect where it will feed that disconnect with a 35A fused circuit and a 20A fused disconnect 8 feet away connected by conduit. Can I use the tap rule to feed the 20A disconnect with #12? I'm a bit confused by the intention of this rule.

Yes... IMHO. It means that you cannot daisy chain panels from a tap.

 

[jim dungar]

Can anyone explain what exactly this means?
The tap conductors do not extend beyond the switchboard, switchgear, panelboard, disconnecting means, or control devices they supply.

I am tapping a 60A #6 in a disconnect where it will feed that disconnect with a 35A fused circuit and a 20A fused disconnect 8 feet away connected by conduit. Can I use the tap rule to feed the 20A disconnect with #12? I'm a bit confused by the intention of this rule.

That rule says your conductors cannot leave the enclosure where they are tapped.
Your disconnect is mounted 8' away, so you cannot use this particular tap rule. You will need to follow the 25' rule instead.

Also remember, the lengths given in 240.21 are for the length of the conductors not the physical distance between equipment.

 

[jaggedben]

That rule says your conductors cannot leave the enclosure where they are tapped.
...

Huh?
The location of the tap is not the equipment the conductors 'supply'.

 

[Strathead]

Huh?
The location of the tap is not the equipment the conductors 'supply'.

Yes, like small conductors off the main bus in a panel to feed a set of fuses for instruments in the panel, for example.

 

[infinity]

The tap conductors do not extend beyond the switchboard, switchgear, panelboard, disconnecting means, or control devices they supply.

It just means that they cannot extend past your disconnect. Since the disconnect will have fuses the tap conductors end at the disconnect therefore they do not extend beyond the disconnect.

 

[jim dungar]

It just means that they cannot extend past your disconnect.

I agree.
You can only feed a single device. As mentioned above you cannot feed multiple devices using the 10' rule.