Hayward GVA-24 Wiring - why can't I double lug two actuators?

[coilerman]

I can't seem to find any wiring information on the GVA-24 but I found one for a Jandy. It's says "Do not double lug the JVA switch leg wires (red and white wires)."

I have two actuators and I tried double lugging before I read the Jandy manual (both red wires together, both white wires together) and the acuators don't work when I try to energise them.

What's the reason you can't do this?

 

[bdavis466]

What about the black wires? They need to be connected too.

The only reason I can think why the manual states that is to prevent the low-voltage circuit breakers from tripping.

 

[coilerman]

The black wires can be double lugged for sure since they are common. But the Jandy manual says not to double lug the two leg wires. The reason I ask is that after powering up in double lugged configuration, one of the actuators works, the other doesn't. Going back to individually lugged and still one of them doesn't work. I'm wondering if I somehow damaged it in double lugged configuration.

Is there a breaker in the actuator unit? I see only one breaker in my control panel and it's for the entire panel.

 

[mas985]

Double lugging, requires twice the amperage which can overload the driver/relay.