An important Wisbech town centre road could be partially closed for a month, creating misery for traders and motorists.
Nene Quay could be reduced to one lane until September 2 while new gas and electricity connections are installed.
UK Power Networks says it has timed the work for the school holidays to reduce the impact on the town.
But some traders in the town say this is a busy time and want the works put back until September.
Town postmaster Ray Wicks, who owns Etcetera in York Row, said that the town gets a lot of visitors during the summer.
He said: “It is going to create difficulties for the traffic flow in the town centre. It is unfortunate that they have chosen this time of year.
“It would be better if they held off until after the school holidays.”
Leader of Wisbech Town Council David Oliver said there had been no consultation over this work.
He said: “While we understand that this work needs to be done, it would have been nice to have been consulted in some way so people can advise customers.”
A statement from UK Power Networks says: “Engineers are working to upgrade electricity cables in the Nene Quay area of Wisbech.
“To keep the impact to a minimum we are sharing the excavation with a separate utility and timed the work during the school holidays in consultation with the local authority.
“Work was due to start on Monday and is authorised by the local authority to last until September 2. In order for our engineers to work in safety, one lane of the carriageway has had to be closed.
“We apologise for any inconvenience caused while work is taking place.”
Hill Street will also be closed on Sunday for the gas and electrical connections to be installed.
Further traffic problems have been seen in the town after a water main burst on the junction between Norwich Road and Wilberforce Road on Sunday.
Anglian Water had closed the junction to repair the main on Sunday and work is expected to last until today or tomorrow. Traffic lights were installed on Monday.